GCSE Compuitng Hardware Key terms
- 2. Learning Objectives REVISION 2.1.2 Hardware Central Processing Unit. It is used to control all of the actions of the computer. It is like the brain of the computer.
- 4. Learning Objectives REVISION 2.1.2 Hardware Fetch Decode Execute The CPU will FETCH instructions from memory, DECODE them and EXECUTE them. This is done millions of times a second.
- 6. Learning Objectives REVISION 2.1.2 Hardware How fast the CPU performs the FDE cycle. This is measured in MHz
- 8. Learning Objectives REVISION 2.1.2 Hardware How many cores the CPU has. The more cores, the more instructions can be executed.
- 10. Learning Objectives REVISION 2.1.2 Hardware The size of the cache on the CPU. The higher it is the faster the CPU.
- 18. Learning Objectives REVISION 2.1.2 Hardware The different inputs and outputs for the logic gates. NOT IN OUT 1 0 1 1 AND IN 1 IN 2 OUT 0 0 0 0 1 0 1 0 0 1 1 1 OR IN 1 IN 2 OUT 0 0 0 0 1 1 1 0 1 1 1 1
- 20. Learning Objectives REVISION 2.1.2 Hardware Random Access Memory Volatile memory. Stores the data in use, software in use and parts of the O/S in use.
- 22. Learning Objectives REVISION 2.1.2 Hardware Read only memory. Non-volatile. Stores the boot-up program of the computer.
- 24. Learning Objectives REVISION 2.1.2 Hardware A portion of the memory borrowed from the hard drive when the RAM is full.
- 26. Learning Objectives REVISION 2.1.2 Hardware Volatile memory located on the CPU. Very small but fast to access.
- 28. Learning Objectives REVISION 2.1.2 Hardware A device that allows a user to send information to a computer. Keyboard, microphone, mouse
- 30. Learning Objectives REVISION 2.1.2 Hardware A device that will present the use with the result of a process from the computer. Speakers, monitor, printer
- 32. Learning Objectives REVISION 2.1.2 Hardware The device will communicate directly with CPU.
- 34. Learning Objectives REVISION 2.1.2 Hardware Files are stored permanently. The device does not communicate directly with CPU.
- 36. Learning Objectives REVISION 2.1.2 Hardware • Data burned into film by lasers • Small capacity • Very cheap to produce • Examples – CD, DVD
- 38. Learning Objectives REVISION 2.1.2 Hardware • Data stored by magnets on a magnetic disk • Very high capacity • Bad portability but very durable. • Examples – hard drive, backup tapes
- 40. Learning Objectives REVISION 2.1.2 Hardware • Data stored electronically. • No moving parts • Slower than magnetic, faster than optical • Good portability and good durability • Examples – external hard drive, USB disk